Trace-trimmer



No. 6|l,l8l. Patented Sept. 20, I898.

L. L. MILLER.

TRACE TRIMMER.

(Application filed Nov. 22, 1897.)

(mi Model.)

THE Nonms PETERS co, PHOTO LITHQ., WASHXNGTON, n. c.

-UNITED STATES PATENT @rrroa.

LOUIS L. MILLER, OF NEWPORT, KENTUCKY.

TRACE-TRIMM ER.

SPECIFICATION forming part of Letters Patent No. 611,181, dated September 20, 1898.

Application filed November 22, 1897. Serial No. 659,464. (No model.)'

To all whom it may concern:

Be it known that I, LOUIS L. MILLER, residing at Newport, in the county of Campbell and State of Kentucky, have invented certain new and useful Improvements in Trace-Trimm ers, of which the following is aspecification.

The object of my invention is to provide a trace or strap trimmer which can be readily adjusted to straps of different widths by moving theguide-stock's, and also to provide convenient means for clamping the material down upon the bed-plate when the straps are drawn between the knives.

Other features of myinvention will be more fully set forth in the description of the accompanying drawings, making a part of this specification, in which Figure 1 is a top plan view of my improvement. Fig. 2 is a front elevation thereof. Fig. 3 is a side elevation of one of the guidestocks and the bed-plate.

A represents the bed-plate of the machine,

and A a bracket formed integral therewith for attaching the machine to a bench.

B represents a grooved way.

0 represents a vertical post mounted on the guide-stock D. The rear end of said guide-stock has a depending flange a, resting in the groove-guide B.

E represents an adjusting-screw tapping through the guide -stock D, with its point bearing on the bed-stock A for adjusting the inclination of the knife-stock, as will be here-' inafter explained. The knife K is attached by screw-bolts c to the top of the knife-post.

F represents a clam ping-rod having a flange e, bearing on the face of the guide-stock D. Said post is tenoned and projects through the bed-plate, moving in a slot formed through the way H.

I represents a nut into which the tenon of the post taps. Said nut fits and slides in way H. There are two guide-stocks, each being furnished with the parts described, one guidestock and its mountings being the counterpart of the other.

L represents adjusting -.screws tapping through the knife-posts and bearing against the shanks of the knives.

IWI represents clamping-arms pivoted to the guide-stocks upon center bolts N.

n represents a depending foot adapted to press upon the strap and hold it'to the action of the knives.

f represents chains attached to a spring g, the other ends of the chain being attached, respectively,to theinner ends of arms M, only one of which is shown in Fig. 2.

h represents chains attached to the outer ends of said arms and to a ring t, which is in turn attached to a foot-lever by a chain j, the foot-lever not being shown. It will be observed that the outer ends of said arms are short, so that when the chains 71 are operated the clamp-feet n, of arms M can be thrown clear back, as'indicated in dotted lines, Fig. 2, out of the way of the space between the knives, so as to allow of the ready insertion of a strap by simply dropping between the knives and then holding it down to the action of the knives by the clamp-arms.

Mode of operation: The adj usting-screw E is set so as to give the desired inclination of the knife-stock to produce the required depth of out. The adjusting-screws L are likewise adjusted to give the knives the required horizontal adjustment. Then the knives are clamped in position. The guide-stocks are adjusted the proper distance apart to suit the width of the strap and clamped by the screw-rods F into position for trimming. The operator then rocks the arms M by depressing the foot-lever until the feet a have moved entirely out of the way of the incoming strap. The strap is then dropped upon the bed-plate between the guide-stocks and the operator releases the foot-lever and the spring g pulls the clamp-arms down upon the strap, when the operator pulls it through, trimming off the edges in the desired manner.

Having described my invention, I claim 1. In a trace-trimming machine, the combination of a bed-plate having in its top a longitudinally-arranged grooved way and provided with longitudinally-arranged slots, a pair of guide-stocks having depending flanges to slide in said way, vertical knife-posts carried on said guide-stocks, knives adjustable on said posts, a pair of vertical clamping-rods extended through said stocks and through the slots of the bed-plate and each'having a flange bearing on the upper face of the guidestock, nuts on the lower ends of said clamping-rods, swinging clamp-arms pivoted to the guide-stocks and having their inner ends provided with clamp-feet adapted to be swung into and out of the space between said guidestocks, and means for controlling said clamparins, substantially as described.

2. In a trace-trimmin g machine, the combination of the slotted bed-plateA provided in its top with a grooved way B and having on its under side the grooved ways II, guidestocks D carrying vertical knife-posts C and having flanges a slidingly'engaged in the way B, knives K adjustable on the knife-posts, means for adjusting said knives horizontally and vertically, flanged clamping-rods F extended vertically through the guide-stocks and through the slots of the bed-plate, nuts I on the lower ends of said rods, clamp-arms M pivoted to the guide-stocks, and adj ustingscrews E for the guide-stocks, substantially as described.

3. In a trace-trimming machine, the combination of the slotted bed-plate A provided with grooved ways B and Hat top and bot to1n,guide-stocks D having flanges a slidingly engaged in the grooved way B, flanged clamping-rods F extended through the guidestocks and through the slots of the bed-plate and provided with nuts I adapted to be engaged in the grooved ways H, adjustingscrews E for the guide-stocks, knife-posts 0 arranged vertically on the guide-stocks, knives K adjustable on said posts, swinging clamp-arms M pivoted to the guide-stocks, and mechanism for operating said arms to swing their inner ends into and out of the space between the guide-stocks, substantially as described.

In testimony whereof I have hereunto set my hand.

LOUIS L. MILLER. 

